Refrigerating device for centrifugal apparatus.



No. 655,0l6. Patented July 3|, I900. E. a. u. SALENIUS. BEFR IGERATING DEVICE FOR CENTRIFUGAL APPARATUS.

(Application filed Dec. 29, 1897. .(No Model.) 2 Sheets-Sheet l.

' INVENTOR BY ATTORNEY WITNESSES I M Q n4: mums pain: no, PKOTC-LITHO" wuummou, D. c.

No. 655,0l6. Patented July 3|, I900. E. G. N. SALENIUS. REFBIQERATING DEVICE FOR GENTBIFUGAL APPARATUS.

(Application filed Dec. 29, 1897.)-

2 Sheets-Sheet z (No Model.)

: INVENTOR v ATTORNEY WITNESSES UNITED STATES PATENT OFFICE.

ERIK, eUsr F NICOLAUS sALENIUs', or ALBANO, SWEDEN.

REFRIGERATING DEVICE FORIQEVNTRIFUGAL APPARATUS.

SPECIFICATION forming part of Letters Patent No. 655,016, dated July 31, 1900. Application filed December 29, 1897. Serial No. 664,419. (No model.)

To ctZZ whom it may concern."

Be it known that I, ERIK GUSTAF NIooLAUs SALENIUs, mechanical engineer, a subject of the King of Sweden and Norway, and a resi .dent of Albano, in the Kingdom of Sweden,

have invented certain new and useful Improvements in Befrigerating Devices for Centrifugal Apparatus, (for which I have obtained a patent in France, No. 264,237, dated February 19, 1897, and in Great Britain, No. 579,197, dated March 4, 1897,) of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to a refrigerating device to be used in the centrifugal separation of liquids, more especially milk. The milkor liquid in order to make it keep well is heated before its introduction into the centrifugal apparatus and cooled subsequent to the centrifugal treatment. The cooling operation is carried' out with this invention in a more satisfactory manner than heretofore, and as a result the consumption of ice is materially reduced.

The invention consists in placing the cooler for the liquid discharging from the centrifugal apparatus, as cream or skim milk, in communication with asecond cooler,by means of which the heated liquid is cooled before being introduced into the centrifugal apparatus, the same cooling fluid thus being used for cooling the liquid discharging from the centrifugal apparatus and that which is to enter said apparatus.

For the sake of brevity the treatment of milk only is referred to in the following.

Figure 1 shows the general arrangement of the system in question. Fig. l is a detail View of the cooler for the cream or skim-milk. Fig. 2 shows a longitudinal section, and Fig. 3 atransverse section, of a cooler. Fig. 4 shows the latter viewed from above.

Referring to Fig. 1, a designates the reservoir containing the cooling liquid; b, the cooler for the cream or skim-milk discharging from the centrifugal apparatus 0; d, the cooler for the milk which is to be introduced into the centrifugal apparatus, and e the container which supplies the latter milk. The cream or skim-milk is conducted through the pipe 7" to the cooler 19, and the coolingliquid flows through the pipe g to the latter from the reservoir a. On passing through the cooler 19 the cooling liquid flows through the pipe h to the cooler d and subsequently out by the pipe From the container e the sterilized milk passes by the pipe is to the cooler 61, and thence to the centrifugal apparatus a by the pipe Z. The cooling liquid on passing through b and cooling off the cream or skim-milk to the desired temperature flows to d, where it cools the relatively-hotter milk coming from c. The heat now stored in the cooling liquid may be utilized by using the latter for feeding the boiler or similar purpose. i

In order to make the cooler at efficient, it may be arranged as shown in Figs. 2, 3, and 4. It is composed of three cylinders m, 'n, and 0, one inclosing the others, so as to leave spaces between them, as seen from Fig. 2. The outer cylinder is provided at the top with a wide drawer-like opening on, in which is placed another vessel or compartment m communicating by means of a pipe m with the inner cylinder 0. The compartment m has its bottom perforated, and in the interior of the cylinder 0 there is a rotating agitator p, drivenby means of a belt passing over the belt-pulley p. The sterilized milk is conducted through the pipe k into the cylinder n, spreading between the latter and the cylinder 0 in the shape of a thin layer to be subsequently conducted to the centrifugal apparatus by the pipe Z. The cooling liquid enters through h in the cylinder 0, whence it rises through the pipe m to the compartment m Through the perforated bottom of the latter the liquid drops in fine jets onto the cylinder 71, and While surrounding said cylinder it passes on to the outlet 2' of the cylinder m. The milk is thus distributed in a thin layer, surrounded oneach side by cooling liquid and separated from it by thin plate walls only. It is evident that an apparatus of corresponding arrangement can be used for heating purposes -for instance, in the sterilization of'milk not treated in the centrifugal apparatus, the cooling agent in this case apparently being replaced by some heating fluid. If the openingm' at the top I of compartment m be closed, some gaseous fluid might be employed as the heating or cooling agent.

The cooler 19 for the cream and skim-milk is not new in itself; but its construction is 1 illustrated somewhat in detail in Fig. 1*,Which shows it on a scale somewhat larger than it is shown in Fig. 1 and partly in section. The

outer shell I) is spirally corrugated to form a spiral passage through which flows the cool-' ing liquid b This liquid is admitted at the top and may be drawn off at the bottom. The

cream or skimmed milk flows from a basin b at the top through numerous apertures b onto the corrugated surface of theshell b] and down over this surface to a basin b below. Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. The combination with a centrifugal apparatus, a primary cooler, which cools the liquid t9 be treated on its way to the centrifugal apparatus, a'second cooler which cools the liquid coming from the said apparatus,co'nduits for conducting through the apparatus the liquid to be treated, and pipes conduct-1 ing a cooling liquid under a head or pressure, first to the second cooler and then, after it shall have passed through this cooler, to the primary cooler through which it finally passes, whereby the second cooler is first acted upon by the cooling liquid, substantially as set fort-h.

2. The combination with the three cylinders m, n and 0, arranged one within the other and having interspaces between them,

of the vessel m having a perforated bottom and situated over an aperture in the upper side of the outer cylinder m, and a conduit m connecting said vessel with the interior of the'inner cylinder 0, said inner cylinder having an inlet for atemperature-changin'g liquid, the cylinder m having an outlet for said liquid, and the cylinder n having an inlet and an outlet forthe liquid of which the temperature is to be changed, substantially asset forth. t

3. The combination with the three cylinders m, n and 0, arranged one within the p In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses:

ERIK GUSTAF NICOLAUS SALENIUS. Witnesses:

ERNST SVANQVIST, o a E. HERMANSSON. 

